from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. A metal chain or a set of rings attached to a bar that can be fitted over the fingers to increase the impact of a blow with the fist.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A weapon consisting of a metal reinforcement for the clenched fist, with finger holes molded in.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a small metal weapon; worn over the knuckles on the back of the hand
Sorry, no etymologies found.
One was a swell minis-try ruffian, a genteel lantern-jaw with a flowered weskit and brass knuckles in his fob, no doubt; the other was your complete politico, with the pudding face of a bad-tempered baby and no nonsense.
He had looked like an Ivy League gentleman, but he had always carried a switchblade in one pocket and brass knuckles in the other.
Dudley stepped in front of the three, his suitcoat open, .45 automatic, sap and brass knuckles in plain view.